Zobrazeno 1 - 10
of 10
pro vyhledávání: '"B. R. Thomadsen"'
Publikováno v:
Physics in Medicine and Biology. 35:115-120
Type TPX radiographic film by Polaroid Corporation is a 'dry-chemical' processed imaging system. While this film system has found its greatest application in surgical radiography, that it uses a small (40*65 cm2), portable processor requiring no dark
Publikováno v:
Medical physics. 34(2)
The goals of interstitial implant brachytherapy include delivery of the target dose in a uniform manner while sparing sensitive structures, and minimizing the number of needles and sources. We investigated the use of a multi-species source arrangemen
Autor:
C H McCollough, I A Cunningham, J P Felmlee, N J Hangiandreou, B H Hasegawa, J M Kofler, W W Peppler, B R Thomadsen
Publikováno v:
Radiology. 190:920-922
Autor:
B R, Paliwal, M A, Ritter, T R, McNutt, T R, Mackie, B R, Thomadsen, J A, Purdy, T J, Kinsella
Publikováno v:
International journal of radiation oncology, biology, physics. 42(1)
With increased interest in 3-D conformal radiation therapy and dose escalation, it is necessary to provide advanced techniques to assure quality in treatment delivery. Multi-institutional trials for these newer treatment techniques require methods of
Autor:
J A, Stitt, B R, Thomadsen
Publikováno v:
Seminars in oncology. 24(6)
The treatment of cancer with radioactive sources using topical molds and intracavitary radium showed the efficacy of brachytherapy long before external radiation therapy became common practice. Brachytherapy is progressing in several clinical directi
Publikováno v:
Medical physics. 19(5)
High dose rate (HDR) iridium sources must be calibrated regularly because of the short half-life of Ir-192. High dose rate sources can now be calibrated using a new well-type chamber that allows easy, reproducible source calibrations. The chamber inc
Publikováno v:
Medical physics. 18(3)
A method is described for calibration of 192Ir high-dose-rate (HDR) brachytherapy afterloading systems. Since NIST does not offer calibration of ionization chambers with the gamma-ray spectrum of iridium-192, an interpolation procedure is employed, u
Publikováno v:
Physics in Medicine & Biology; Oct2007, Vol. 52 Issue 19, p6027-6037, 11p
Publikováno v:
Acta Radiologica: Oncology, Radiation, Physics, Biology. 18:57-64
A 10 kG magnetic field has been used to modify the conventional electron beam isodose distributions. Isodose curves of modified distributions for single and multiple beams measured in a polystyrene phantom are presented. The results suggest a potenti
Publikováno v:
Medical physics. 10(6)
Solid phantoms designed with nesting, rotatable cylinders, allow increased flexibility in the positioning of dosimeters or test objects, permitting continuous movement as in a water phantom, but with increased ease of handling. Using such phantoms, m